二硫酸カリウム

Potassium pyrosulfate

HCID 62681
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基本情報

CAS
7790-62-7
標準SMILES
O=S(=O)([O-])OS(=O)(=O)[O-].[K+].[K+]
InChIKey
KAQHZJVQFBJKCK-UHFFFAOYSA-L
分子式
K2O7S2
平均分子量
254.33 g/mol
単同位体質量
253.8359577

名称と識別子

優先名称
Potassium pyrosulfate
IUPAC
dipotassium;sulfonato sulfate
現地名
二硫酸カリウム
英語名
Potassium pyrosulfate
分子式
K2O7S2
分子量
254.32

名称と別名

Potassium pyrosulfate7790-62-7Dipotassium disulfateDipotassium disulphateDipotassium pyrosulfateUNII-AVJ6ZST7L6AVJ6ZST7L6Disulfuric acid, dipotassium saltPotassium sulfate (K2S2O7)Potassium disulfate (K2S2O7)Pyrosulfuric acid, dipotassium saltEINECS 232-216-8
名称をさらに表示
二硫酸ジカリウム二硫酸二カリウムピロ硫酸カリウム(二硫酸カリウム)二硫酸カリウム ピロ硫酸カリウムピロ硫酸カリウム( 二硫酸カリウム)二硫酸カリウムPOTASSIUM HYDROGEN SULFATEPOTASSIUM PYROSULPHATEPOTASSIUM DISULFATEPotassium pyrosulfatPOTASSIUM DISULPHATEPotassiumPyrosulphateGrDI-POTASSIUM DISULPHATEPotassiuM anhydrosulfate
Potassium pyrosulfate (K2S2O7)EC 232-216-8Disulfuric acid, potassium salt (1:2)DTXSID10889580POTASSIUM PYROSULFATE [MI]RefChem:175589Potassium disulfate, ReagentPlusDTXCID801028833

データベース識別子

CAS
7790-62-7
PubChem CID
62681
DTXSID
DTXSID10889580
UNII
AVJ6ZST7L6
EC Number
232-216-8
Nikkaji
J254.775I

物性

構造計算による物性

極性表面積
140 Ų
水素結合供与体数
0
水素結合受容体数
7
回転可能結合数
0
重原子数
11

実験および物理化学的性質

Physical DescriptionColorless solid; [Merck Index] White solid; [Sigma-Aldrich MSDS]

物理化学的性質

融点
325 °C · 325 °C
比重(密度)
2.28 g/mL · 2.28 g/mL at 25 °C (lit.)
貯蔵温度
no restrictions.
溶解性
2 O: · H2O: 0.1M at20℃、透明、無色
外見
個体
比重
2.28 · 2.28
化学的性質 · 1 件

化学的特性Potassium pyrosulphate, also known as potassium disulfate, appears as colorless needles or as a white crystalline powder or fused pieces. It is soluble in water, converting to potassium bisulfate. Specifically, it dissolves in cold water but decomposes in hot water to form potassium sulfate. It melts below 300 °C and decomposes at higher temperatures. This compound exhibits strong oxidizing properties and can form sulfates through eutectic fusion with certain metal oxides that are insoluble in water and acids.

安全と法規制

GHS分類

GHS Classification · 6 件

This chemical does not meet GHS hazard criteria for 1.3% (2 of 149) of reports.

Danger

H314 (97.3%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]；H318 (38.9%): Causes serious eye damage [Danger Serious eye damage/eye irritation]；H331 (36.9%): Toxic if inhaled [Danger Acute toxicity, inhalation]

P260, P261, P264, P264+P265, P271, P280, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P321, P363, P403+P233, P405, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 149 reports by companies from 8 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.；Reported as not meeting GHS hazard criteria per 2 of 149 reports by companies.；There are 7 notifications provided by 147 of 149 reports by companies with hazard statement code(s).；Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website.

危険有害性情報

Regulatory Information · 3 件

Chemical: Disulfuric acid, dipotassium salt

Status: Active Update: 04-04-2018 https://echa.europa.eu/registration-dossier/-/registered-dossier/11493

Potassium pyrosulphate: Does not have an individual approval but may be used under an appropriate group standard

Hazards SummaryCauses burns; Inhalation may cause corrosive injuries to upper respiratory tract and lungs; [Sigma-Aldrich MSDS] See Potassium sulfate.
Hazard Classes and CategoriesSkin Corr. 1A (97.3%)；Eye Dam. 1 (38.9%)；Acute Tox. 3 (36.9%)

安全と保護具

Protective Action Criteria (PAC) · 3 件

0.20 [mg/m3]

8.7 [mg/m3]

160 [mg/m3]

毒性情報

Adverse EffectsDermatotoxin - Skin burns.；Toxic Pneumonitis - Inflammation of the lungs induced by inhalation of metal fumes or toxic gases and vapors.

法規制情報

Regulatory Information · 3 件

Chemical: Disulfuric acid, dipotassium salt

Status: Active Update: 04-04-2018 https://echa.europa.eu/registration-dossier/-/registered-dossier/11493

Potassium pyrosulphate: Does not have an individual approval but may be used under an appropriate group standard

安全データ

wgk
3
tsca
TSCA listed
ridadr
UN 3260 8/PG 2
hs_code
2833 29 80
risk_code
34
hazard_code
C

化学と産業

用途と製造

Household ProductsInformation on 2 consumer products that contain Dipotassium disulfate in the following categories is provided:；• Commercial / Institutional
General Manufacturing InformationDisulfuric acid, potassium salt (1:2): ACTIVE
応用分野 · 3 件

解説K2S2O7(254.32)．二硫酸カリウム, KHSO4の熱分解や，K2SO4と濃硫酸またはSO3の計算量を一緒に加熱すると得られる．四面体型の2個のSO4が，1個のO原子を共有して結合した形の [O3S-O-SO3]2－ を含むイオン結晶．密度2.28 g cm－3．S-O1.437 Å(末端)，1.645 Å(架橋)．∠S-O-S124.2°．吸湿性で，湿った空気中では発煙する．水に可溶．水溶液はHSO4－を含み強酸性を示す．固体を加熱すると約325 ℃ で分解する．分析で重金属酸化物の融解剤として用いられる．森北出版「化学辞典（第2版）

使用Acid flux in analysis, laboratory reagent.

一般的な説明Potassium disulfite (Potassium pyrosulfate) has been synthesized from potassium hydrogen sulfate, via melting.

上流・下流製品情報

下流製品

サプライヤー100 社

国药集团化学试剂有限公司86-21-63210123 · [email protected]
湖北永阔科技有限公司027-59223108 15972152991 · [email protected]
上海阿拉丁生化科技股份有限公司400-6206333 13167063860 · [email protected]
Shandong chuangyingchemical Co., Ltd.18853181302 · [email protected]
湖南韵邦生物科技股份有限公司85561037 15386497078 · [email protected]

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